/*
 * Created on 02-Jan-2005
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package org.gudy.azureus2.pluginsimpl.local.utils.xml.rss;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.gudy.azureus2.core3.util.Debug;
import org.gudy.azureus2.plugins.utils.xml.rss.RSSChannel;
import org.gudy.azureus2.plugins.utils.xml.rss.RSSItem;
import org.gudy.azureus2.plugins.utils.xml.simpleparser.SimpleXMLParserDocumentNode;

/**
 * @author parg
 * 
 */

public class RSSChannelImpl implements RSSChannel {
    private SimpleXMLParserDocumentNode node;

    private RSSItem[] items;

    private boolean is_atom;

    protected RSSChannelImpl(SimpleXMLParserDocumentNode _node, boolean _is_atom) {
        node = _node;
        is_atom = _is_atom;

        SimpleXMLParserDocumentNode[] xml_items = node.getChildren();

        List its = new ArrayList();

        for (int i = 0; i < xml_items.length; i++) {

            SimpleXMLParserDocumentNode xml_item = xml_items[i];

            if (xml_item.getName().equalsIgnoreCase(is_atom ? "entry" : "item")) {

                its.add(new RSSItemImpl(xml_item, is_atom));
            }
        }

        items = new RSSItem[its.size()];

        its.toArray(items);
    }

    public String getTitle() {
        return (node.getChild("title").getValue());
    }

    public String getDescription() {
        String[] fields;

        if (is_atom) {

            fields = new String[] { "summary", "description" };

        } else {

            fields = new String[] { "description", "summary" };
        }

        for (String field : fields) {

            SimpleXMLParserDocumentNode x = node.getChild(field);

            if (x != null) {

                return (x.getValue());
            }
        }

        return (null);
    }

    public URL getLink() {
        try {
            return (new URL(node.getChild("link").getValue()));

        } catch (MalformedURLException e) {

            Debug.printStackTrace(e);

            return (null);
        }
    }

    public Date getPublicationDate() {
        // optional attribute

        SimpleXMLParserDocumentNode pd = node.getChild(is_atom ? "updated" : "pubdate");

        if (pd == null) {

            return (null);
        }

        if (is_atom) {

            return (RSSUtils.parseAtomDate(pd.getValue()));

        } else {

            return (RSSUtils.parseRSSDate(pd.getValue()));
        }
    }

    public RSSItem[] getItems() {
        return (items);
    }

    public SimpleXMLParserDocumentNode getNode() {
        return (node);
    }
}
